The V-Ray Toon Render Element renders the entire scene with the V-Ray Toon rendering effect and contains a mask for the toon outlines, although the toon color is not present in it. It also supports opacity set from the toon effect, presenting it as grayed outlines.
To use render elements, select from the Available render elements column and click the Add button to add the passes you wish to generate at render time. When you render the scene, the added render elements listed in the column on the right, will also render, which can be viewed from the VFB window's channel drop-down menu.
For more information on the parameters on this dialog, see the Render Elements tab page.
